Int shipping cost for Y-HCl powder

So I had everything that i wanted on my cart, (but was missing Y-HCl) and went to checkout, the shipping cost was reasonable. But then I added Y-HCl the shipping cost increased by $22.50 for only 30g, so is this normal? considering its only 30g.

I started playing with an empty cart, adding progressive amounts of Y-HCl and this is what i got: